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basic texture-based glDrawPixels path works

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This commit is contained in:
Brian 2007-08-10 13:03:13 -06:00
parent 9cf9aa1ea2
commit e51aa57293
1 changed files with 60 additions and 21 deletions
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81
src/mesa/state_tracker/st_cb_drawpixels.c
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@ -100,21 +100,54 @@ make_mipmap_tree(struct st_context *st,
const struct gl_pixelstore_attrib *unpack,
const GLvoid *pixels)
{
struct pipe_context *pipe = st->pipe;
const struct gl_texture_format *mformat;
GLuint pipeFormat = st_choose_pipe_format(st->pipe, GL_RGBA, format, type);
int cpp = 4;
struct pipe_mipmap_tree *mt = CALLOC_STRUCT(pipe_mipmap_tree);
GLbitfield flags = PIPE_SURFACE_FLAG_TEXTURE;
mformat = st_ChooseTextureFormat(st->ctx, GL_RGBA, format, type);
assert(format);
pipeFormat = st_mesa_format_to_pipe_format(mformat->MesaFormat);
assert(pipeFormat);
if (unpack->BufferObj) {
if (unpack->BufferObj && unpack->BufferObj->Name) {
/*
mt->region = buffer_object_region(unpack->BufferObj);
*/
}
else {
static const GLuint dstImageOffsets = 0;
GLboolean success;
GLubyte *dest;
GLuint pitch;
/* allocate texture region/storage */
mt->region = st->pipe->region_alloc(st->pipe, cpp, width, height, flags);
/* XXX do texstore() here */
pitch = mt->region->pitch;
/* map texture region */
dest = pipe->region_map(pipe, mt->region);
/* put image into texture region */
success = mformat->StoreImage(st->ctx, 2, /* dims */
GL_RGBA, /* baseInternalFormat */
mformat, /* gl_texture_format */
dest, /* dest */
0, 0, 0, /* dstX/Y/Zoffset */
pitch * cpp, /* dstRowStride */
&dstImageOffsets, /* dstImageOffsets */
width, height, 1, /* size */
format, type, /* src format/type */
pixels, /* data source */
unpack);
/* unmap */
pipe->region_unmap(pipe, mt->region);
assert(success);
}
mt->target = GL_TEXTURE_2D;
@ -146,10 +179,10 @@ static void
free_mipmap_tree(struct pipe_context *pipe, struct pipe_mipmap_tree *mt)
{
pipe->region_release(pipe, &mt->region);
free(mt);
}
static void
draw_quad(struct st_context *st, GLfloat x, GLfloat y, GLfloat z,
GLsizei width, GLsizei height)
@ -183,7 +216,7 @@ draw_quad(struct st_context *st, GLfloat x, GLfloat y, GLfloat z,
verts[3][0][0] = x;
verts[3][0][1] = y + height;
verts[3][1][0] = 0.0;
verts[3][1][1] = 11.0;
verts[3][1][1] = 1.0;
/* same for all verts: */
for (i = 0; i < 4; i++) {
@ -204,32 +237,38 @@ draw_textured_quad(struct st_context *st, GLfloat x, GLfloat y, GLfloat z,
const struct gl_pixelstore_attrib *unpack,
const GLvoid *pixels)
{
static struct st_fragment_program *stfp = NULL;
struct pipe_mipmap_tree *mt;
struct pipe_setup_state setup;
struct pipe_fs_state fs;
/* setup state: just scissor */
memset(&setup, 0, sizeof(setup));
if (st->ctx->Scissor.Enabled)
setup.scissor = 1;
st->pipe->set_setup_state(st->pipe, &setup);
{
struct pipe_setup_state setup;
memset(&setup, 0, sizeof(setup));
if (st->ctx->Scissor.Enabled)
setup.scissor = 1;
st->pipe->set_setup_state(st->pipe, &setup);
}
/* fragment shader state: color pass-through program */
if (!stfp) {
stfp = make_drawpixels_shader(st);
{
static struct st_fragment_program *stfp = NULL;
struct pipe_fs_state fs;
if (!stfp) {
stfp = make_drawpixels_shader(st);
}
memset(&fs, 0, sizeof(fs));
fs.inputs_read = stfp->Base.Base.InputsRead;
fs.tokens = &stfp->tokens[0];
fs.constants = NULL;
st->pipe->set_fs_state(st->pipe, &fs);
}
memset(&fs, 0, sizeof(fs));
fs.inputs_read = stfp->Base.Base.InputsRead;
fs.tokens = &stfp->tokens[0];
fs.constants = NULL;
st->pipe->set_fs_state(st->pipe, &fs);
/* mipmap tree state: */
mt = make_mipmap_tree(st, width, height, format, type, unpack, pixels);
st->pipe->set_texture_state(st->pipe, 0, mt);
{
mt = make_mipmap_tree(st, width, height, format, type, unpack, pixels);
st->pipe->set_texture_state(st->pipe, 0, mt);
}
/* draw! */
/* draw textured quad */
draw_quad(st, x, y, z, width, height);
/* restore GL state */