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mesa: Add renderbuffer accessors for R8/RG88/R16/RG1616.

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This will replace the current (broken by trying to use an enum in the
preprocessor) spantmp2.h support I wrote for the intel driver.

Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Eric Anholt
2011-04-15 19:11:53 -07:00
parent a52803e108
commit f0471d904c
1 changed files with 310 additions and 0 deletions
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310
src/mesa/main/renderbuffer.c
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@@ -53,6 +53,45 @@
* Routines for get/put values in common buffer formats follow.
*/
/* Returns a bytes per pixel of the DataType in the get/put span
* functions for at least a subset of the available combinations a
* renderbuffer can have.
*
* It would be nice to see gl_renderbuffer start talking about a
* gl_format instead of a GLenum DataType.
*/
static int
get_datatype_bytes(struct gl_renderbuffer *rb)
{
int component_size;
switch (rb->DataType) {
case GL_FLOAT:
case GL_UNSIGNED_INT:
case GL_UNSIGNED_INT_24_8_EXT:
component_size = 4;
break;
case GL_UNSIGNED_SHORT:
component_size = 2;
break;
case GL_UNSIGNED_BYTE:
component_size = 1;
break;
default:
component_size = 1;
assert(0);
}
switch (rb->_BaseFormat) {
case GL_DEPTH_COMPONENT:
case GL_DEPTH_STENCIL:
return component_size;
default:
return 4 * component_size;
}
}
/* This is commonly used by most of the accessors. */
static void *
get_pointer_generic(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLint x, GLint y)
@@ -74,6 +113,105 @@ get_row_generic(struct gl_context *ctx, struct gl_renderbuffer *rb,
memcpy(values, src, count * _mesa_get_format_bytes(rb->Format));
}
/* For the GL_RED/GL_RG/GL_RGB format/DataType combinations (and
* GL_LUMINANCE/GL_INTENSITY?), the Put functions are a matter of
* storing those initial components of the value per pixel into the
* destination.
*/
static void
put_row_generic(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLuint count, GLint x, GLint y,
const void *values, const GLubyte *mask)
{
void *row = rb->GetPointer(ctx, rb, x, y);
int format_bytes = _mesa_get_format_bytes(rb->Format) / sizeof(GLfloat);
int datatype_bytes = get_datatype_bytes(rb);
unsigned int i;
if (mask) {
for (i = 0; i < count; i++) {
void *dst = row + i * format_bytes;
const void *src = values + i * datatype_bytes;
if (mask[i]) {
memcpy(dst, src, format_bytes);
}
}
}
else {
for (i = 0; i < count; i++) {
void *dst = row + i * format_bytes;
const void *src = values + i * datatype_bytes;
memcpy(dst, src, format_bytes);
}
}
}
static void
put_mono_row_generic(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLuint count, GLint x, GLint y,
const void *value, const GLubyte *mask)
{
void *row = rb->GetPointer(ctx, rb, x, y);
int format_bytes = _mesa_get_format_bytes(rb->Format) / sizeof(GLfloat);
unsigned int i;
if (mask) {
for (i = 0; i < count; i++) {
void *dst = row + i * format_bytes;
if (mask[i]) {
memcpy(dst, value, format_bytes);
}
}
}
else {
for (i = 0; i < count; i++) {
void *dst = row + i * format_bytes;
memcpy(dst, value, format_bytes);
}
}
}
static void
put_values_generic(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLuint count, const GLint x[], const GLint y[],
const void *values, const GLubyte *mask)
{
int format_bytes = _mesa_get_format_bytes(rb->Format) / sizeof(GLfloat);
int datatype_bytes = get_datatype_bytes(rb);
unsigned int i;
for (i = 0; i < count; i++) {
if (!mask || mask[i]) {
void *row = rb->GetPointer(ctx, rb, x[i], y[i]);
void *dst = row + i * format_bytes;
const void *src = values + i * datatype_bytes;
memcpy(dst, src, format_bytes);
}
}
}
static void
put_mono_values_generic(struct gl_context *ctx,
struct gl_renderbuffer *rb,
GLuint count, const GLint x[], const GLint y[],
const void *value, const GLubyte *mask)
{
int format_bytes = _mesa_get_format_bytes(rb->Format) / sizeof(GLfloat);
unsigned int i;
for (i = 0; i < count; i++) {
if (!mask || mask[i]) {
void *row = rb->GetPointer(ctx, rb, x[i], y[i]);
void *dst = row + i * format_bytes;
memcpy(dst, value, format_bytes);
}
}
}
/**********************************************************************
* Functions for buffers of 1 X GLubyte values.
* Typically stencil.
@@ -829,6 +967,134 @@ put_mono_values_ushort4(struct gl_context *ctx, struct gl_renderbuffer *rb,
}
}
/**********************************************************************
* Functions for MESA_FORMAT_R8.
*/
static void
get_row_r8(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
GLint x, GLint y, void *values)
{
const GLubyte *src = rb->GetPointer(ctx, rb, x, y);
GLuint *dst = values;
GLuint i;
for (i = 0; i < count; i++) {
dst[i] = 0xff000000 | src[i];
}
}
static void
get_values_r8(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
const GLint x[], const GLint y[], void *values)
{
GLuint *dst = (GLuint *) values;
GLuint i;
for (i = 0; i < count; i++) {
const GLubyte *src = rb->GetPointer(ctx, rb, x[i], y[i]);
dst[i] = 0xff000000 | *src;
}
}
/**********************************************************************
* Functions for MESA_FORMAT_RG88.
*/
static void
get_row_rg88(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
GLint x, GLint y, void *values)
{
const GLushort *src = rb->GetPointer(ctx, rb, x, y);
GLuint *dst = values;
GLuint i;
for (i = 0; i < count; i++) {
dst[i] = 0xff000000 | src[i];
}
}
static void
get_values_rg88(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLuint count, const GLint x[], const GLint y[], void *values)
{
GLuint *dst = (GLuint *) values;
GLuint i;
for (i = 0; i < count; i++) {
const GLshort *src = rb->GetPointer(ctx, rb, x[i], y[i]);
dst[i] = 0xff000000 | *src;
}
}
/**********************************************************************
* Functions for MESA_FORMAT_R16.
*/
static void
get_row_r16(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
GLint x, GLint y, void *values)
{
const GLushort *src = rb->GetPointer(ctx, rb, x, y);
GLushort *dst = values;
GLuint i;
for (i = 0; i < count; i++) {
dst[i * 4 + RCOMP] = src[i];
dst[i * 4 + GCOMP] = 0;
dst[i * 4 + BCOMP] = 0;
dst[i * 4 + ACOMP] = 0xffff;
}
}
static void
get_values_r16(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
const GLint x[], const GLint y[], void *values)
{
GLushort *dst = values;
GLuint i;
for (i = 0; i < count; i++) {
const GLushort *src = rb->GetPointer(ctx, rb, x[i], y[i]);
dst[i * 4 + RCOMP] = *src;
dst[i * 4 + GCOMP] = 0;
dst[i * 4 + BCOMP] = 0;
dst[i * 4 + ACOMP] = 0xffff;
}
}
/**********************************************************************
* Functions for MESA_FORMAT_RG1616.
*/
static void
get_row_rg1616(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
GLint x, GLint y, void *values)
{
const GLushort *src = rb->GetPointer(ctx, rb, x, y);
GLushort *dst = values;
GLuint i;
for (i = 0; i < count; i++) {
dst[i * 4 + RCOMP] = src[i * 2];
dst[i * 4 + GCOMP] = src[i * 2 + 1];
dst[i * 4 + BCOMP] = 0;
dst[i * 4 + ACOMP] = 0xffff;
}
}
static void
get_values_rg1616(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLuint count, const GLint x[], const GLint y[], void *values)
{
GLushort *dst = values;
GLuint i;
for (i = 0; i < count; i++) {
const GLshort *src = rb->GetPointer(ctx, rb, x[i], y[i]);
dst[i * 4 + RCOMP] = src[0];
dst[i * 4 + GCOMP] = src[1];
dst[i * 4 + BCOMP] = 0;
dst[i * 4 + ACOMP] = 0xffff;
}
}
/**
* This is the default software fallback for gl_renderbuffer's span
* access functions.
@@ -866,6 +1132,50 @@ _mesa_set_renderbuffer_accessors(struct gl_renderbuffer *rb)
rb->PutMonoValues = put_mono_values_ubyte4;
break;
case MESA_FORMAT_R8:
rb->DataType = GL_UNSIGNED_BYTE;
rb->GetValues = get_values_r8;
rb->GetRow = get_row_r8;
rb->PutRow = put_row_generic;
rb->PutRowRGB = put_row_generic;
rb->PutMonoRow = put_mono_row_generic;
rb->PutValues = put_values_generic;
rb->PutMonoValues = put_mono_values_generic;
break;
case MESA_FORMAT_RG88:
rb->DataType = GL_UNSIGNED_BYTE;
rb->GetValues = get_values_rg88;
rb->GetRow = get_row_rg88;
rb->PutRow = put_row_generic;
rb->PutRowRGB = put_row_generic;
rb->PutMonoRow = put_mono_row_generic;
rb->PutValues = put_values_generic;
rb->PutMonoValues = put_mono_values_generic;
break;
case MESA_FORMAT_R16:
rb->DataType = GL_UNSIGNED_SHORT;
rb->GetValues = get_values_r16;
rb->GetRow = get_row_r16;
rb->PutRow = put_row_generic;
rb->PutRowRGB = put_row_generic;
rb->PutMonoRow = put_mono_row_generic;
rb->PutValues = put_values_generic;
rb->PutMonoValues = put_mono_values_generic;
break;
case MESA_FORMAT_RG1616:
rb->DataType = GL_UNSIGNED_SHORT;
rb->GetValues = get_values_rg1616;
rb->GetRow = get_row_rg1616;
rb->PutRow = put_row_generic;
rb->PutRowRGB = put_row_generic;
rb->PutMonoRow = put_mono_row_generic;
rb->PutValues = put_values_generic;
rb->PutMonoValues = put_mono_values_generic;
break;
case MESA_FORMAT_SIGNED_RGBA_16:
rb->DataType = GL_SHORT;
rb->GetValues = get_values_ushort4;