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mesa: Add renderbuffer accessors for A, I, L, FLOAT32.

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Of these, intel will be using I and L initially, and A once we rewrite
fragment shaders and the CC for rendering to it as R.

Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Eric Anholt 2011-04-18 10:53:06 -07:00
parent bad08969b5
commit b31a99367c
1 changed files with 218 additions and 0 deletions
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218
src/mesa/main/renderbuffer.c
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@ -1109,6 +1109,194 @@ get_values_rg1616(struct gl_context *ctx, struct gl_renderbuffer *rb,
}
}
/**********************************************************************
* Functions for MESA_FORMAT_INTENSITY_FLOAT32.
*/
static void
get_row_i_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLuint count, GLint x, GLint y, void *values)
{
const GLfloat *src = rb->GetPointer(ctx, rb, x, y);
GLfloat *dst = values;
GLuint i;
for (i = 0; i < count; i++) {
dst[i * 4 + RCOMP] =
dst[i * 4 + GCOMP] =
dst[i * 4 + BCOMP] =
dst[i * 4 + ACOMP] = src[i];
}
}
static void
get_values_i_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLuint count, const GLint x[], const GLint y[],
void *values)
{
GLfloat *dst = values;
GLuint i;
for (i = 0; i < count; i++) {
const GLfloat *src = rb->GetPointer(ctx, rb, x[i], y[i]);
dst[i * 4 + RCOMP] =
dst[i * 4 + GCOMP] =
dst[i * 4 + BCOMP] =
dst[i * 4 + ACOMP] = src[0];
}
}
/**********************************************************************
* Functions for MESA_FORMAT_LUMINANCE_FLOAT32.
*/
static void
get_row_l_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLuint count, GLint x, GLint y, void *values)
{
const GLfloat *src = rb->GetPointer(ctx, rb, x, y);
GLfloat *dst = values;
GLuint i;
for (i = 0; i < count; i++) {
dst[i * 4 + RCOMP] =
dst[i * 4 + GCOMP] =
dst[i * 4 + BCOMP] = src[i];
dst[i * 4 + ACOMP] = 1.0;
}
}
static void
get_values_l_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLuint count, const GLint x[], const GLint y[],
void *values)
{
GLfloat *dst = values;
GLuint i;
for (i = 0; i < count; i++) {
const GLfloat *src = rb->GetPointer(ctx, rb, x[i], y[i]);
dst[i * 4 + RCOMP] =
dst[i * 4 + GCOMP] =
dst[i * 4 + BCOMP] = src[0];
dst[i * 4 + ACOMP] = 1.0;
}
}
/**********************************************************************
* Functions for MESA_FORMAT_ALPHA_FLOAT32.
*/
static void
get_row_a_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLuint count, GLint x, GLint y, void *values)
{
const GLfloat *src = rb->GetPointer(ctx, rb, x, y);
GLfloat *dst = values;
GLuint i;
for (i = 0; i < count; i++) {
dst[i * 4 + RCOMP] = 0.0;
dst[i * 4 + GCOMP] = 0.0;
dst[i * 4 + BCOMP] = 0.0;
dst[i * 4 + ACOMP] = src[i];
}
}
static void
get_values_a_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLuint count, const GLint x[], const GLint y[],
void *values)
{
GLfloat *dst = values;
GLuint i;
for (i = 0; i < count; i++) {
const GLfloat *src = rb->GetPointer(ctx, rb, x[i], y[i]);
dst[i * 4 + RCOMP] = 0.0;
dst[i * 4 + GCOMP] = 0.0;
dst[i * 4 + BCOMP] = 0.0;
dst[i * 4 + ACOMP] = src[0];
}
}
static void
put_row_a_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLuint count, GLint x, GLint y,
const void *values, const GLubyte *mask)
{
float *dst = rb->GetPointer(ctx, rb, x, y);
const float *src = values;
unsigned int i;
if (mask) {
for (i = 0; i < count; i++) {
if (mask[i]) {
dst[i] = src[i * 4 + ACOMP];
}
}
}
else {
for (i = 0; i < count; i++) {
dst[i] = src[i * 4 + ACOMP];
}
}
}
static void
put_mono_row_a_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLuint count, GLint x, GLint y,
const void *value, const GLubyte *mask)
{
float *dst = rb->GetPointer(ctx, rb, x, y);
const float *src = value;
unsigned int i;
if (mask) {
for (i = 0; i < count; i++) {
if (mask[i]) {
dst[i] = src[ACOMP];
}
}
}
else {
for (i = 0; i < count; i++) {
dst[i] = src[ACOMP];
}
}
}
static void
put_values_a_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLuint count, const GLint x[], const GLint y[],
const void *values, const GLubyte *mask)
{
const float *src = values;
unsigned int i;
for (i = 0; i < count; i++) {
if (!mask || mask[i]) {
float *dst = rb->GetPointer(ctx, rb, x[i], y[i]);
*dst = src[i * 4 + ACOMP];
}
}
}
static void
put_mono_values_a_float32(struct gl_context *ctx,
struct gl_renderbuffer *rb,
GLuint count, const GLint x[], const GLint y[],
const void *value, const GLubyte *mask)
{
const float *src = value;
unsigned int i;
for (i = 0; i < count; i++) {
if (!mask || mask[i]) {
float *dst = rb->GetPointer(ctx, rb, x[i], y[i]);
*dst = src[ACOMP];
}
}
}
/**********************************************************************
* Functions for MESA_FORMAT_R_FLOAT32.
*/
@ -1337,6 +1525,36 @@ _mesa_set_renderbuffer_accessors(struct gl_renderbuffer *rb)
rb->PutMonoValues = put_mono_values_generic;
break;
case MESA_FORMAT_INTENSITY_FLOAT32:
rb->GetRow = get_row_i_float32;
rb->GetValues = get_values_i_float32;
rb->PutRow = put_row_generic;
rb->PutRowRGB = NULL;
rb->PutMonoRow = put_mono_row_generic;
rb->PutValues = put_values_generic;
rb->PutMonoValues = put_mono_values_generic;
break;
case MESA_FORMAT_LUMINANCE_FLOAT32:
rb->GetRow = get_row_l_float32;
rb->GetValues = get_values_l_float32;
rb->PutRow = put_row_generic;
rb->PutRowRGB = NULL;
rb->PutMonoRow = put_mono_row_generic;
rb->PutValues = put_values_generic;
rb->PutMonoValues = put_mono_values_generic;
break;
case MESA_FORMAT_ALPHA_FLOAT32:
rb->GetRow = get_row_a_float32;
rb->GetValues = get_values_a_float32;
rb->PutRow = put_row_a_float32;
rb->PutRowRGB = NULL;
rb->PutMonoRow = put_mono_row_a_float32;
rb->PutValues = put_values_a_float32;
rb->PutMonoValues = put_mono_values_a_float32;
break;
case MESA_FORMAT_RG_FLOAT32:
rb->GetRow = get_row_rg_float32;
rb->GetValues = get_values_rg_float32;