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Diffstat (limited to 'mesalib/src/mesa/main/texrender.c')
-rw-r--r--mesalib/src/mesa/main/texrender.c1270
1 files changed, 635 insertions, 635 deletions
diff --git a/mesalib/src/mesa/main/texrender.c b/mesalib/src/mesa/main/texrender.c
index c68105b39..6d5531f18 100644
--- a/mesalib/src/mesa/main/texrender.c
+++ b/mesalib/src/mesa/main/texrender.c
@@ -1,635 +1,635 @@
-
-#include "context.h"
-#include "colormac.h"
-#include "macros.h"
-#include "texfetch.h"
-#include "texrender.h"
-#include "renderbuffer.h"
-
-
-/*
- * Render-to-texture code for GL_EXT_framebuffer_object
- */
-
-
-/**
- * Derived from gl_renderbuffer class
- */
-struct texture_renderbuffer
-{
- struct gl_renderbuffer Base; /**< Base class object */
- struct gl_texture_image *TexImage;
- StoreTexelFunc Store;
- GLint Yoffset; /**< Layer for 1D array textures. */
- GLint Zoffset; /**< Layer for 2D array textures, or slice
- * for 3D textures
- */
-};
-
-
-/**
- * Get row of values from the renderbuffer that wraps a texture image.
- */
-static void
-texture_get_row(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
- GLint x, GLint y, void *values)
-{
- const struct texture_renderbuffer *trb
- = (const struct texture_renderbuffer *) rb;
- const GLint z = trb->Zoffset;
- GLuint i;
-
- ASSERT(trb->TexImage->Width == rb->Width);
- ASSERT(trb->TexImage->Height == rb->Height);
-
- y += trb->Yoffset;
-
- if (rb->DataType == CHAN_TYPE) {
- GLchan *rgbaOut = (GLchan *) values;
- for (i = 0; i < count; i++) {
- GLfloat rgba[4];
- trb->TexImage->FetchTexelf(trb->TexImage, x + i, y, z, rgba);
- UNCLAMPED_FLOAT_TO_RGBA_CHAN(rgbaOut + 4 * i, rgba);
- }
- }
- else if (rb->DataType == GL_UNSIGNED_SHORT) {
- GLushort *zValues = (GLushort *) values;
- for (i = 0; i < count; i++) {
- GLfloat flt;
- trb->TexImage->FetchTexelf(trb->TexImage, x + i, y, z, &flt);
- zValues[i] = (GLushort) (flt * 0xffff);
- }
- }
- else if (rb->DataType == GL_UNSIGNED_INT) {
- GLuint *zValues = (GLuint *) values;
- /*
- const GLdouble scale = (GLdouble) 0xffffffff;
- */
- for (i = 0; i < count; i++) {
- GLfloat flt;
- trb->TexImage->FetchTexelf(trb->TexImage, x + i, y, z, &flt);
-#if 0
- /* this should work, but doesn't (overflow due to low precision) */
- zValues[i] = (GLuint) (flt * scale);
-#else
- /* temporary hack */
- zValues[i] = ((GLuint) (flt * 0xffffff)) << 8;
-#endif
- }
- }
- else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) {
- GLuint *zValues = (GLuint *) values;
- for (i = 0; i < count; i++) {
- GLfloat flt;
- trb->TexImage->FetchTexelf(trb->TexImage, x + i, y, z, &flt);
- zValues[i] = ((GLuint) (flt * 0xffffff)) << 8;
- }
- }
- else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) {
- GLuint *zValues = (GLuint *) values;
- for (i = 0; i < count; i++) {
- GLfloat flt;
- trb->TexImage->FetchTexelf(trb->TexImage, x + i, y, z, &flt);
- zValues[i] = (GLuint) (flt * 0xffffff);
- }
- }
- else {
- _mesa_problem(ctx, "invalid rb->DataType in texture_get_row");
- }
-}
-
-
-static void
-texture_get_values(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
- const GLint x[], const GLint y[], void *values)
-{
- const struct texture_renderbuffer *trb
- = (const struct texture_renderbuffer *) rb;
- const GLint z = trb->Zoffset;
- GLuint i;
-
- if (rb->DataType == CHAN_TYPE) {
- GLchan *rgbaOut = (GLchan *) values;
- for (i = 0; i < count; i++) {
- GLfloat rgba[4];
- trb->TexImage->FetchTexelf(trb->TexImage, x[i], y[i] + trb->Yoffset,
- z, rgba);
- UNCLAMPED_FLOAT_TO_RGBA_CHAN(rgbaOut + 4 * i, rgba);
- }
- }
- else if (rb->DataType == GL_UNSIGNED_SHORT) {
- GLushort *zValues = (GLushort *) values;
- for (i = 0; i < count; i++) {
- GLfloat flt;
- trb->TexImage->FetchTexelf(trb->TexImage, x[i], y[i] + trb->Yoffset,
- z, &flt);
- zValues[i] = (GLushort) (flt * 0xffff);
- }
- }
- else if (rb->DataType == GL_UNSIGNED_INT) {
- GLuint *zValues = (GLuint *) values;
- for (i = 0; i < count; i++) {
- GLfloat flt;
- trb->TexImage->FetchTexelf(trb->TexImage, x[i], y[i] + trb->Yoffset,
- z, &flt);
-#if 0
- zValues[i] = (GLuint) (flt * 0xffffffff);
-#else
- zValues[i] = ((GLuint) (flt * 0xffffff)) << 8;
-#endif
- }
- }
- else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) {
- GLuint *zValues = (GLuint *) values;
- for (i = 0; i < count; i++) {
- GLfloat flt;
- trb->TexImage->FetchTexelf(trb->TexImage, x[i], y[i] + trb->Yoffset,
- z, &flt);
- zValues[i] = ((GLuint) (flt * 0xffffff)) << 8;
- }
- }
- else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) {
- GLuint *zValues = (GLuint *) values;
- for (i = 0; i < count; i++) {
- GLfloat flt;
- trb->TexImage->FetchTexelf(trb->TexImage, x[i], y[i] + trb->Yoffset,
- z, &flt);
- zValues[i] = (GLuint) (flt * 0xffffff);
- }
- }
- else {
- _mesa_problem(ctx, "invalid rb->DataType in texture_get_values");
- }
-}
-
-
-/**
- * Put row of values into a renderbuffer that wraps a texture image.
- */
-static void
-texture_put_row(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
- GLint x, GLint y, const void *values, const GLubyte *mask)
-{
- const struct texture_renderbuffer *trb
- = (const struct texture_renderbuffer *) rb;
- const GLint z = trb->Zoffset;
- GLuint i;
-
- y += trb->Yoffset;
-
- if (rb->DataType == CHAN_TYPE) {
- const GLchan *rgba = (const GLchan *) values;
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- trb->Store(trb->TexImage, x + i, y, z, rgba);
- }
- rgba += 4;
- }
- }
- else if (rb->DataType == GL_UNSIGNED_SHORT) {
- const GLushort *zValues = (const GLushort *) values;
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- trb->Store(trb->TexImage, x + i, y, z, zValues + i);
- }
- }
- }
- else if (rb->DataType == GL_UNSIGNED_INT) {
- const GLuint *zValues = (const GLuint *) values;
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- trb->Store(trb->TexImage, x + i, y, z, zValues + i);
- }
- }
- }
- else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) {
- const GLuint *zValues = (const GLuint *) values;
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- GLfloat flt = (GLfloat) ((zValues[i] >> 8) * (1.0 / 0xffffff));
- trb->Store(trb->TexImage, x + i, y, z, &flt);
- }
- }
- }
- else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) {
- const GLuint *zValues = (const GLuint *) values;
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- GLfloat flt = (GLfloat) ((zValues[i] & 0xffffff) * (1.0 / 0xffffff));
- trb->Store(trb->TexImage, x + i, y, z, &flt);
- }
- }
- }
- else {
- _mesa_problem(ctx, "invalid rb->DataType in texture_put_row");
- }
-}
-
-/**
- * Put row of RGB values into a renderbuffer that wraps a texture image.
- */
-static void
-texture_put_row_rgb(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
- GLint x, GLint y, const void *values, const GLubyte *mask)
-{
- const struct texture_renderbuffer *trb
- = (const struct texture_renderbuffer *) rb;
- const GLint z = trb->Zoffset;
- GLuint i;
-
- y += trb->Yoffset;
-
- if (rb->DataType == CHAN_TYPE) {
- const GLchan *rgb = (const GLchan *) values;
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- trb->Store(trb->TexImage, x + i, y, z, rgb);
- }
- rgb += 3;
- }
- }
- else if (rb->DataType == GL_UNSIGNED_SHORT) {
- const GLushort *zValues = (const GLushort *) values;
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- trb->Store(trb->TexImage, x + i, y, z, zValues + i);
- }
- }
- }
- else if (rb->DataType == GL_UNSIGNED_INT) {
- const GLuint *zValues = (const GLuint *) values;
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- trb->Store(trb->TexImage, x + i, y, z, zValues + i);
- }
- }
- }
- else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) {
- const GLuint *zValues = (const GLuint *) values;
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- GLfloat flt = (GLfloat) ((zValues[i] >> 8) * (1.0 / 0xffffff));
- trb->Store(trb->TexImage, x + i, y, z, &flt);
- }
- }
- }
- else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) {
- const GLuint *zValues = (const GLuint *) values;
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- GLfloat flt = (GLfloat) ((zValues[i] & 0xffffff) * (1.0 / 0xffffff));
- trb->Store(trb->TexImage, x + i, y, z, &flt);
- }
- }
- }
- else {
- _mesa_problem(ctx, "invalid rb->DataType in texture_put_row");
- }
-}
-
-
-static void
-texture_put_mono_row(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
- GLint x, GLint y, const void *value, const GLubyte *mask)
-{
- const struct texture_renderbuffer *trb
- = (const struct texture_renderbuffer *) rb;
- const GLint z = trb->Zoffset;
- GLuint i;
-
- y += trb->Yoffset;
-
- if (rb->DataType == CHAN_TYPE) {
- const GLchan *rgba = (const GLchan *) value;
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- trb->Store(trb->TexImage, x + i, y, z, rgba);
- }
- }
- }
- else if (rb->DataType == GL_UNSIGNED_SHORT) {
- const GLushort zValue = *((const GLushort *) value);
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- trb->Store(trb->TexImage, x + i, y, z, &zValue);
- }
- }
- }
- else if (rb->DataType == GL_UNSIGNED_INT) {
- const GLuint zValue = *((const GLuint *) value);
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- trb->Store(trb->TexImage, x + i, y, z, &zValue);
- }
- }
- }
- else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) {
- const GLuint zValue = *((const GLuint *) value);
- const GLfloat flt = (GLfloat) ((zValue >> 8) * (1.0 / 0xffffff));
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- trb->Store(trb->TexImage, x + i, y, z, &flt);
- }
- }
- }
- else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) {
- const GLuint zValue = *((const GLuint *) value);
- const GLfloat flt = (GLfloat) ((zValue & 0xffffff) * (1.0 / 0xffffff));
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- trb->Store(trb->TexImage, x + i, y, z, &flt);
- }
- }
- }
- else {
- _mesa_problem(ctx, "invalid rb->DataType in texture_put_mono_row");
- }
-}
-
-
-static void
-texture_put_values(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
- const GLint x[], const GLint y[], const void *values,
- const GLubyte *mask)
-{
- const struct texture_renderbuffer *trb
- = (const struct texture_renderbuffer *) rb;
- const GLint z = trb->Zoffset;
- GLuint i;
-
- if (rb->DataType == CHAN_TYPE) {
- const GLchan *rgba = (const GLchan *) values;
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, rgba);
- }
- rgba += 4;
- }
- }
- else if (rb->DataType == GL_UNSIGNED_SHORT) {
- const GLushort *zValues = (const GLushort *) values;
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, zValues + i);
- }
- }
- }
- else if (rb->DataType == GL_UNSIGNED_INT) {
- const GLuint *zValues = (const GLuint *) values;
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, zValues + i);
- }
- }
- }
- else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) {
- const GLuint *zValues = (const GLuint *) values;
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- GLfloat flt = (GLfloat) ((zValues[i] >> 8) * (1.0 / 0xffffff));
- trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &flt);
- }
- }
- }
- else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) {
- const GLuint *zValues = (const GLuint *) values;
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- GLfloat flt = (GLfloat) ((zValues[i] & 0xffffff) * (1.0 / 0xffffff));
- trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &flt);
- }
- }
- }
- else {
- _mesa_problem(ctx, "invalid rb->DataType in texture_put_values");
- }
-}
-
-
-static void
-texture_put_mono_values(GLcontext *ctx, struct gl_renderbuffer *rb,
- GLuint count, const GLint x[], const GLint y[],
- const void *value, const GLubyte *mask)
-{
- const struct texture_renderbuffer *trb
- = (const struct texture_renderbuffer *) rb;
- const GLint z = trb->Zoffset;
- GLuint i;
-
- if (rb->DataType == CHAN_TYPE) {
- const GLchan *rgba = (const GLchan *) value;
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, rgba);
- }
- }
- }
- else if (rb->DataType == GL_UNSIGNED_INT) {
- const GLuint zValue = *((const GLuint *) value);
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &zValue);
- }
- }
- }
- else if (rb->DataType == GL_UNSIGNED_SHORT) {
- const GLushort zValue = *((const GLushort *) value);
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &zValue);
- }
- }
- }
- else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) {
- const GLuint zValue = *((const GLuint *) value);
- const GLfloat flt = (GLfloat) ((zValue >> 8) * (1.0 / 0xffffff));
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &flt);
- }
- }
- }
- else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) {
- const GLuint zValue = *((const GLuint *) value);
- const GLfloat flt = (GLfloat) ((zValue & 0xffffff) * (1.0 / 0xffffff));
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &flt);
- }
- }
- }
- else {
- _mesa_problem(ctx, "invalid rb->DataType in texture_put_mono_values");
- }
-}
-
-
-static void
-store_nop(struct gl_texture_image *texImage,
- GLint col, GLint row, GLint img,
- const void *texel)
-{
-}
-
-
-static void
-delete_texture_wrapper(struct gl_renderbuffer *rb)
-{
- ASSERT(rb->RefCount == 0);
- free(rb);
-}
-
-
-/**
- * This function creates a renderbuffer object which wraps a texture image.
- * The new renderbuffer is plugged into the given attachment point.
- * This allows rendering into the texture as if it were a renderbuffer.
- */
-static void
-wrap_texture(GLcontext *ctx, struct gl_renderbuffer_attachment *att)
-{
- struct texture_renderbuffer *trb;
- const GLuint name = 0;
-
- ASSERT(att->Type == GL_TEXTURE);
- ASSERT(att->Renderbuffer == NULL);
-
- trb = CALLOC_STRUCT(texture_renderbuffer);
- if (!trb) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "wrap_texture");
- return;
- }
-
- /* init base gl_renderbuffer fields */
- _mesa_init_renderbuffer(&trb->Base, name);
- /* plug in our texture_renderbuffer-specific functions */
- trb->Base.Delete = delete_texture_wrapper;
- trb->Base.AllocStorage = NULL; /* illegal! */
- trb->Base.GetRow = texture_get_row;
- trb->Base.GetValues = texture_get_values;
- trb->Base.PutRow = texture_put_row;
- trb->Base.PutRowRGB = texture_put_row_rgb;
- trb->Base.PutMonoRow = texture_put_mono_row;
- trb->Base.PutValues = texture_put_values;
- trb->Base.PutMonoValues = texture_put_mono_values;
-
- /* update attachment point */
- _mesa_reference_renderbuffer(&att->Renderbuffer, &(trb->Base));
-}
-
-
-
-/**
- * Update the renderbuffer wrapper for rendering to a texture.
- * For example, update the width, height of the RB based on the texture size,
- * update the internal format info, etc.
- */
-static void
-update_wrapper(GLcontext *ctx, const struct gl_renderbuffer_attachment *att)
-{
- struct texture_renderbuffer *trb
- = (struct texture_renderbuffer *) att->Renderbuffer;
-
- (void) ctx;
- ASSERT(trb);
-
- trb->TexImage = att->Texture->Image[att->CubeMapFace][att->TextureLevel];
- ASSERT(trb->TexImage);
-
- trb->Store = _mesa_get_texel_store_func(trb->TexImage->TexFormat);
- if (!trb->Store) {
- /* we'll never draw into some textures (compressed formats) */
- trb->Store = store_nop;
- }
-
- if (att->Texture->Target == GL_TEXTURE_1D_ARRAY_EXT) {
- trb->Yoffset = att->Zoffset;
- trb->Zoffset = 0;
- }
- else {
- trb->Yoffset = 0;
- trb->Zoffset = att->Zoffset;
- }
-
- trb->Base.Width = trb->TexImage->Width;
- trb->Base.Height = trb->TexImage->Height;
- trb->Base.InternalFormat = trb->TexImage->InternalFormat;
- trb->Base.Format = trb->TexImage->TexFormat;
-
- /* XXX may need more special cases here */
- switch (trb->TexImage->TexFormat) {
- case MESA_FORMAT_Z24_S8:
- trb->Base.DataType = GL_UNSIGNED_INT_24_8_EXT;
- trb->Base._BaseFormat = GL_DEPTH_STENCIL;
- break;
- case MESA_FORMAT_S8_Z24:
- trb->Base.DataType = GL_UNSIGNED_INT_8_24_REV_MESA;
- trb->Base._BaseFormat = GL_DEPTH_STENCIL;
- break;
- case MESA_FORMAT_Z24_X8:
- trb->Base.DataType = GL_UNSIGNED_INT_24_8_EXT;
- trb->Base._BaseFormat = GL_DEPTH_COMPONENT;
- break;
- case MESA_FORMAT_X8_Z24:
- trb->Base.DataType = GL_UNSIGNED_INT_8_24_REV_MESA;
- trb->Base._BaseFormat = GL_DEPTH_COMPONENT;
- break;
- case MESA_FORMAT_Z16:
- trb->Base.DataType = GL_UNSIGNED_SHORT;
- trb->Base._BaseFormat = GL_DEPTH_COMPONENT;
- break;
- case MESA_FORMAT_Z32:
- trb->Base.DataType = GL_UNSIGNED_INT;
- trb->Base._BaseFormat = GL_DEPTH_COMPONENT;
- break;
- default:
- trb->Base.DataType = CHAN_TYPE;
- trb->Base._BaseFormat = GL_RGBA;
- }
- trb->Base.Data = trb->TexImage->Data;
-}
-
-
-
-/**
- * Called when rendering to a texture image begins, or when changing
- * the dest mipmap level, cube face, etc.
- * This is a fallback routine for software render-to-texture.
- *
- * Called via the glRenderbufferTexture1D/2D/3D() functions
- * and elsewhere (such as glTexImage2D).
- *
- * The image we're rendering into is
- * att->Texture->Image[att->CubeMapFace][att->TextureLevel];
- * It'll never be NULL.
- *
- * \param fb the framebuffer object the texture is being bound to
- * \param att the fb attachment point of the texture
- *
- * \sa _mesa_framebuffer_renderbuffer
- */
-void
-_mesa_render_texture(GLcontext *ctx,
- struct gl_framebuffer *fb,
- struct gl_renderbuffer_attachment *att)
-{
- (void) fb;
-
- if (!att->Renderbuffer) {
- wrap_texture(ctx, att);
- }
- update_wrapper(ctx, att);
-}
-
-
-void
-_mesa_finish_render_texture(GLcontext *ctx,
- struct gl_renderbuffer_attachment *att)
-{
- /* do nothing */
- /* The renderbuffer texture wrapper will get deleted by the
- * normal mechanism for deleting renderbuffers.
- */
- (void) ctx;
- (void) att;
-}
+
+#include "context.h"
+#include "colormac.h"
+#include "macros.h"
+#include "texfetch.h"
+#include "texrender.h"
+#include "renderbuffer.h"
+
+
+/*
+ * Render-to-texture code for GL_EXT_framebuffer_object
+ */
+
+
+/**
+ * Derived from gl_renderbuffer class
+ */
+struct texture_renderbuffer
+{
+ struct gl_renderbuffer Base; /**< Base class object */
+ struct gl_texture_image *TexImage;
+ StoreTexelFunc Store;
+ GLint Yoffset; /**< Layer for 1D array textures. */
+ GLint Zoffset; /**< Layer for 2D array textures, or slice
+ * for 3D textures
+ */
+};
+
+
+/**
+ * Get row of values from the renderbuffer that wraps a texture image.
+ */
+static void
+texture_get_row(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+ GLint x, GLint y, void *values)
+{
+ const struct texture_renderbuffer *trb
+ = (const struct texture_renderbuffer *) rb;
+ const GLint z = trb->Zoffset;
+ GLuint i;
+
+ ASSERT(trb->TexImage->Width == rb->Width);
+ ASSERT(trb->TexImage->Height == rb->Height);
+
+ y += trb->Yoffset;
+
+ if (rb->DataType == CHAN_TYPE) {
+ GLchan *rgbaOut = (GLchan *) values;
+ for (i = 0; i < count; i++) {
+ GLfloat rgba[4];
+ trb->TexImage->FetchTexelf(trb->TexImage, x + i, y, z, rgba);
+ UNCLAMPED_FLOAT_TO_RGBA_CHAN(rgbaOut + 4 * i, rgba);
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_SHORT) {
+ GLushort *zValues = (GLushort *) values;
+ for (i = 0; i < count; i++) {
+ GLfloat flt;
+ trb->TexImage->FetchTexelf(trb->TexImage, x + i, y, z, &flt);
+ zValues[i] = (GLushort) (flt * 0xffff);
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_INT) {
+ GLuint *zValues = (GLuint *) values;
+ /*
+ const GLdouble scale = (GLdouble) 0xffffffff;
+ */
+ for (i = 0; i < count; i++) {
+ GLfloat flt;
+ trb->TexImage->FetchTexelf(trb->TexImage, x + i, y, z, &flt);
+#if 0
+ /* this should work, but doesn't (overflow due to low precision) */
+ zValues[i] = (GLuint) (flt * scale);
+#else
+ /* temporary hack */
+ zValues[i] = ((GLuint) (flt * 0xffffff)) << 8;
+#endif
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) {
+ GLuint *zValues = (GLuint *) values;
+ for (i = 0; i < count; i++) {
+ GLfloat flt;
+ trb->TexImage->FetchTexelf(trb->TexImage, x + i, y, z, &flt);
+ zValues[i] = ((GLuint) (flt * 0xffffff)) << 8;
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) {
+ GLuint *zValues = (GLuint *) values;
+ for (i = 0; i < count; i++) {
+ GLfloat flt;
+ trb->TexImage->FetchTexelf(trb->TexImage, x + i, y, z, &flt);
+ zValues[i] = (GLuint) (flt * 0xffffff);
+ }
+ }
+ else {
+ _mesa_problem(ctx, "invalid rb->DataType in texture_get_row");
+ }
+}
+
+
+static void
+texture_get_values(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+ const GLint x[], const GLint y[], void *values)
+{
+ const struct texture_renderbuffer *trb
+ = (const struct texture_renderbuffer *) rb;
+ const GLint z = trb->Zoffset;
+ GLuint i;
+
+ if (rb->DataType == CHAN_TYPE) {
+ GLchan *rgbaOut = (GLchan *) values;
+ for (i = 0; i < count; i++) {
+ GLfloat rgba[4];
+ trb->TexImage->FetchTexelf(trb->TexImage, x[i], y[i] + trb->Yoffset,
+ z, rgba);
+ UNCLAMPED_FLOAT_TO_RGBA_CHAN(rgbaOut + 4 * i, rgba);
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_SHORT) {
+ GLushort *zValues = (GLushort *) values;
+ for (i = 0; i < count; i++) {
+ GLfloat flt;
+ trb->TexImage->FetchTexelf(trb->TexImage, x[i], y[i] + trb->Yoffset,
+ z, &flt);
+ zValues[i] = (GLushort) (flt * 0xffff);
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_INT) {
+ GLuint *zValues = (GLuint *) values;
+ for (i = 0; i < count; i++) {
+ GLfloat flt;
+ trb->TexImage->FetchTexelf(trb->TexImage, x[i], y[i] + trb->Yoffset,
+ z, &flt);
+#if 0
+ zValues[i] = (GLuint) (flt * 0xffffffff);
+#else
+ zValues[i] = ((GLuint) (flt * 0xffffff)) << 8;
+#endif
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) {
+ GLuint *zValues = (GLuint *) values;
+ for (i = 0; i < count; i++) {
+ GLfloat flt;
+ trb->TexImage->FetchTexelf(trb->TexImage, x[i], y[i] + trb->Yoffset,
+ z, &flt);
+ zValues[i] = ((GLuint) (flt * 0xffffff)) << 8;
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) {
+ GLuint *zValues = (GLuint *) values;
+ for (i = 0; i < count; i++) {
+ GLfloat flt;
+ trb->TexImage->FetchTexelf(trb->TexImage, x[i], y[i] + trb->Yoffset,
+ z, &flt);
+ zValues[i] = (GLuint) (flt * 0xffffff);
+ }
+ }
+ else {
+ _mesa_problem(ctx, "invalid rb->DataType in texture_get_values");
+ }
+}
+
+
+/**
+ * Put row of values into a renderbuffer that wraps a texture image.
+ */
+static void
+texture_put_row(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+ GLint x, GLint y, const void *values, const GLubyte *mask)
+{
+ const struct texture_renderbuffer *trb
+ = (const struct texture_renderbuffer *) rb;
+ const GLint z = trb->Zoffset;
+ GLuint i;
+
+ y += trb->Yoffset;
+
+ if (rb->DataType == CHAN_TYPE) {
+ const GLchan *rgba = (const GLchan *) values;
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ trb->Store(trb->TexImage, x + i, y, z, rgba);
+ }
+ rgba += 4;
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_SHORT) {
+ const GLushort *zValues = (const GLushort *) values;
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ trb->Store(trb->TexImage, x + i, y, z, zValues + i);
+ }
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_INT) {
+ const GLuint *zValues = (const GLuint *) values;
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ trb->Store(trb->TexImage, x + i, y, z, zValues + i);
+ }
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) {
+ const GLuint *zValues = (const GLuint *) values;
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ GLfloat flt = (GLfloat) ((zValues[i] >> 8) * (1.0 / 0xffffff));
+ trb->Store(trb->TexImage, x + i, y, z, &flt);
+ }
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) {
+ const GLuint *zValues = (const GLuint *) values;
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ GLfloat flt = (GLfloat) ((zValues[i] & 0xffffff) * (1.0 / 0xffffff));
+ trb->Store(trb->TexImage, x + i, y, z, &flt);
+ }
+ }
+ }
+ else {
+ _mesa_problem(ctx, "invalid rb->DataType in texture_put_row");
+ }
+}
+
+/**
+ * Put row of RGB values into a renderbuffer that wraps a texture image.
+ */
+static void
+texture_put_row_rgb(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+ GLint x, GLint y, const void *values, const GLubyte *mask)
+{
+ const struct texture_renderbuffer *trb
+ = (const struct texture_renderbuffer *) rb;
+ const GLint z = trb->Zoffset;
+ GLuint i;
+
+ y += trb->Yoffset;
+
+ if (rb->DataType == CHAN_TYPE) {
+ const GLchan *rgb = (const GLchan *) values;
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ trb->Store(trb->TexImage, x + i, y, z, rgb);
+ }
+ rgb += 3;
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_SHORT) {
+ const GLushort *zValues = (const GLushort *) values;
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ trb->Store(trb->TexImage, x + i, y, z, zValues + i);
+ }
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_INT) {
+ const GLuint *zValues = (const GLuint *) values;
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ trb->Store(trb->TexImage, x + i, y, z, zValues + i);
+ }
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) {
+ const GLuint *zValues = (const GLuint *) values;
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ GLfloat flt = (GLfloat) ((zValues[i] >> 8) * (1.0 / 0xffffff));
+ trb->Store(trb->TexImage, x + i, y, z, &flt);
+ }
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) {
+ const GLuint *zValues = (const GLuint *) values;
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ GLfloat flt = (GLfloat) ((zValues[i] & 0xffffff) * (1.0 / 0xffffff));
+ trb->Store(trb->TexImage, x + i, y, z, &flt);
+ }
+ }
+ }
+ else {
+ _mesa_problem(ctx, "invalid rb->DataType in texture_put_row");
+ }
+}
+
+
+static void
+texture_put_mono_row(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+ GLint x, GLint y, const void *value, const GLubyte *mask)
+{
+ const struct texture_renderbuffer *trb
+ = (const struct texture_renderbuffer *) rb;
+ const GLint z = trb->Zoffset;
+ GLuint i;
+
+ y += trb->Yoffset;
+
+ if (rb->DataType == CHAN_TYPE) {
+ const GLchan *rgba = (const GLchan *) value;
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ trb->Store(trb->TexImage, x + i, y, z, rgba);
+ }
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_SHORT) {
+ const GLushort zValue = *((const GLushort *) value);
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ trb->Store(trb->TexImage, x + i, y, z, &zValue);
+ }
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_INT) {
+ const GLuint zValue = *((const GLuint *) value);
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ trb->Store(trb->TexImage, x + i, y, z, &zValue);
+ }
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) {
+ const GLuint zValue = *((const GLuint *) value);
+ const GLfloat flt = (GLfloat) ((zValue >> 8) * (1.0 / 0xffffff));
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ trb->Store(trb->TexImage, x + i, y, z, &flt);
+ }
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) {
+ const GLuint zValue = *((const GLuint *) value);
+ const GLfloat flt = (GLfloat) ((zValue & 0xffffff) * (1.0 / 0xffffff));
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ trb->Store(trb->TexImage, x + i, y, z, &flt);
+ }
+ }
+ }
+ else {
+ _mesa_problem(ctx, "invalid rb->DataType in texture_put_mono_row");
+ }
+}
+
+
+static void
+texture_put_values(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+ const GLint x[], const GLint y[], const void *values,
+ const GLubyte *mask)
+{
+ const struct texture_renderbuffer *trb
+ = (const struct texture_renderbuffer *) rb;
+ const GLint z = trb->Zoffset;
+ GLuint i;
+
+ if (rb->DataType == CHAN_TYPE) {
+ const GLchan *rgba = (const GLchan *) values;
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, rgba);
+ }
+ rgba += 4;
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_SHORT) {
+ const GLushort *zValues = (const GLushort *) values;
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, zValues + i);
+ }
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_INT) {
+ const GLuint *zValues = (const GLuint *) values;
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, zValues + i);
+ }
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) {
+ const GLuint *zValues = (const GLuint *) values;
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ GLfloat flt = (GLfloat) ((zValues[i] >> 8) * (1.0 / 0xffffff));
+ trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &flt);
+ }
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) {
+ const GLuint *zValues = (const GLuint *) values;
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ GLfloat flt = (GLfloat) ((zValues[i] & 0xffffff) * (1.0 / 0xffffff));
+ trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &flt);
+ }
+ }
+ }
+ else {
+ _mesa_problem(ctx, "invalid rb->DataType in texture_put_values");
+ }
+}
+
+
+static void
+texture_put_mono_values(struct gl_context *ctx, struct gl_renderbuffer *rb,
+ GLuint count, const GLint x[], const GLint y[],
+ const void *value, const GLubyte *mask)
+{
+ const struct texture_renderbuffer *trb
+ = (const struct texture_renderbuffer *) rb;
+ const GLint z = trb->Zoffset;
+ GLuint i;
+
+ if (rb->DataType == CHAN_TYPE) {
+ const GLchan *rgba = (const GLchan *) value;
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, rgba);
+ }
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_INT) {
+ const GLuint zValue = *((const GLuint *) value);
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &zValue);
+ }
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_SHORT) {
+ const GLushort zValue = *((const GLushort *) value);
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &zValue);
+ }
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) {
+ const GLuint zValue = *((const GLuint *) value);
+ const GLfloat flt = (GLfloat) ((zValue >> 8) * (1.0 / 0xffffff));
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &flt);
+ }
+ }
+ }
+ else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) {
+ const GLuint zValue = *((const GLuint *) value);
+ const GLfloat flt = (GLfloat) ((zValue & 0xffffff) * (1.0 / 0xffffff));
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &flt);
+ }
+ }
+ }
+ else {
+ _mesa_problem(ctx, "invalid rb->DataType in texture_put_mono_values");
+ }
+}
+
+
+static void
+store_nop(struct gl_texture_image *texImage,
+ GLint col, GLint row, GLint img,
+ const void *texel)
+{
+}
+
+
+static void
+delete_texture_wrapper(struct gl_renderbuffer *rb)
+{
+ ASSERT(rb->RefCount == 0);
+ free(rb);
+}
+
+
+/**
+ * This function creates a renderbuffer object which wraps a texture image.
+ * The new renderbuffer is plugged into the given attachment point.
+ * This allows rendering into the texture as if it were a renderbuffer.
+ */
+static void
+wrap_texture(struct gl_context *ctx, struct gl_renderbuffer_attachment *att)
+{
+ struct texture_renderbuffer *trb;
+ const GLuint name = 0;
+
+ ASSERT(att->Type == GL_TEXTURE);
+ ASSERT(att->Renderbuffer == NULL);
+
+ trb = CALLOC_STRUCT(texture_renderbuffer);
+ if (!trb) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "wrap_texture");
+ return;
+ }
+
+ /* init base gl_renderbuffer fields */
+ _mesa_init_renderbuffer(&trb->Base, name);
+ /* plug in our texture_renderbuffer-specific functions */
+ trb->Base.Delete = delete_texture_wrapper;
+ trb->Base.AllocStorage = NULL; /* illegal! */
+ trb->Base.GetRow = texture_get_row;
+ trb->Base.GetValues = texture_get_values;
+ trb->Base.PutRow = texture_put_row;
+ trb->Base.PutRowRGB = texture_put_row_rgb;
+ trb->Base.PutMonoRow = texture_put_mono_row;
+ trb->Base.PutValues = texture_put_values;
+ trb->Base.PutMonoValues = texture_put_mono_values;
+
+ /* update attachment point */
+ _mesa_reference_renderbuffer(&att->Renderbuffer, &(trb->Base));
+}
+
+
+
+/**
+ * Update the renderbuffer wrapper for rendering to a texture.
+ * For example, update the width, height of the RB based on the texture size,
+ * update the internal format info, etc.
+ */
+static void
+update_wrapper(struct gl_context *ctx, const struct gl_renderbuffer_attachment *att)
+{
+ struct texture_renderbuffer *trb
+ = (struct texture_renderbuffer *) att->Renderbuffer;
+
+ (void) ctx;
+ ASSERT(trb);
+
+ trb->TexImage = att->Texture->Image[att->CubeMapFace][att->TextureLevel];
+ ASSERT(trb->TexImage);
+
+ trb->Store = _mesa_get_texel_store_func(trb->TexImage->TexFormat);
+ if (!trb->Store) {
+ /* we'll never draw into some textures (compressed formats) */
+ trb->Store = store_nop;
+ }
+
+ if (att->Texture->Target == GL_TEXTURE_1D_ARRAY_EXT) {
+ trb->Yoffset = att->Zoffset;
+ trb->Zoffset = 0;
+ }
+ else {
+ trb->Yoffset = 0;
+ trb->Zoffset = att->Zoffset;
+ }
+
+ trb->Base.Width = trb->TexImage->Width;
+ trb->Base.Height = trb->TexImage->Height;
+ trb->Base.InternalFormat = trb->TexImage->InternalFormat;
+ trb->Base.Format = trb->TexImage->TexFormat;
+
+ /* XXX may need more special cases here */
+ switch (trb->TexImage->TexFormat) {
+ case MESA_FORMAT_Z24_S8:
+ trb->Base.DataType = GL_UNSIGNED_INT_24_8_EXT;
+ trb->Base._BaseFormat = GL_DEPTH_STENCIL;
+ break;
+ case MESA_FORMAT_S8_Z24:
+ trb->Base.DataType = GL_UNSIGNED_INT_8_24_REV_MESA;
+ trb->Base._BaseFormat = GL_DEPTH_STENCIL;
+ break;
+ case MESA_FORMAT_Z24_X8:
+ trb->Base.DataType = GL_UNSIGNED_INT_24_8_EXT;
+ trb->Base._BaseFormat = GL_DEPTH_COMPONENT;
+ break;
+ case MESA_FORMAT_X8_Z24:
+ trb->Base.DataType = GL_UNSIGNED_INT_8_24_REV_MESA;
+ trb->Base._BaseFormat = GL_DEPTH_COMPONENT;
+ break;
+ case MESA_FORMAT_Z16:
+ trb->Base.DataType = GL_UNSIGNED_SHORT;
+ trb->Base._BaseFormat = GL_DEPTH_COMPONENT;
+ break;
+ case MESA_FORMAT_Z32:
+ trb->Base.DataType = GL_UNSIGNED_INT;
+ trb->Base._BaseFormat = GL_DEPTH_COMPONENT;
+ break;
+ default:
+ trb->Base.DataType = CHAN_TYPE;
+ trb->Base._BaseFormat = GL_RGBA;
+ }
+ trb->Base.Data = trb->TexImage->Data;
+}
+
+
+
+/**
+ * Called when rendering to a texture image begins, or when changing
+ * the dest mipmap level, cube face, etc.
+ * This is a fallback routine for software render-to-texture.
+ *
+ * Called via the glRenderbufferTexture1D/2D/3D() functions
+ * and elsewhere (such as glTexImage2D).
+ *
+ * The image we're rendering into is
+ * att->Texture->Image[att->CubeMapFace][att->TextureLevel];
+ * It'll never be NULL.
+ *
+ * \param fb the framebuffer object the texture is being bound to
+ * \param att the fb attachment point of the texture
+ *
+ * \sa _mesa_framebuffer_renderbuffer
+ */
+void
+_mesa_render_texture(struct gl_context *ctx,
+ struct gl_framebuffer *fb,
+ struct gl_renderbuffer_attachment *att)
+{
+ (void) fb;
+
+ if (!att->Renderbuffer) {
+ wrap_texture(ctx, att);
+ }
+ update_wrapper(ctx, att);
+}
+
+
+void
+_mesa_finish_render_texture(struct gl_context *ctx,
+ struct gl_renderbuffer_attachment *att)
+{
+ /* do nothing */
+ /* The renderbuffer texture wrapper will get deleted by the
+ * normal mechanism for deleting renderbuffers.
+ */
+ (void) ctx;
+ (void) att;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 02:14:34 +0000