diff options
Diffstat (limited to 'src/gallium/drivers/r300/r300_state.c')
| -rw-r--r-- | src/gallium/drivers/r300/r300_state.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c index b4c8ca45ab7..34bf81c1930 100644 --- a/src/gallium/drivers/r300/r300_state.c +++ b/src/gallium/drivers/r300/r300_state.c @@ -1150,7 +1150,9 @@ static void r300_set_constant_buffer(struct pipe_context *pipe, struct pipe_buffer *buf) { struct r300_context* r300 = r300_context(pipe); + struct r300_screen *r300screen = r300_screen(pipe->screen); void *mapped; + int max_size = 0; if (buf == NULL || buf->size == 0 || (mapped = pipe_buffer_map(pipe->screen, buf, PIPE_BUFFER_USAGE_CPU_READ)) == NULL) @@ -1160,6 +1162,33 @@ static void r300_set_constant_buffer(struct pipe_context *pipe, } assert((buf->size % 4 * sizeof(float)) == 0); + + /* Check the size of the constant buffer. */ + switch (shader) { + case PIPE_SHADER_VERTEX: + max_size = 256; + break; + case PIPE_SHADER_FRAGMENT: + if (r300screen->caps->is_r500) { + max_size = 256; + /* XXX Implement emission of r400's extended constant buffer. */ + /*} else if (r300screen->caps->is_r400) { + max_size = 64;*/ + } else { + max_size = 32; + } + break; + default: + assert(0); + } + + /* XXX Subtract immediates and RC_STATE_* variables. */ + if (buf->size > (sizeof(float) * 4 * max_size)) { + debug_printf("r300: Max size of the constant buffer is " + "%i*4 floats.\n", max_size); + abort(); + } + memcpy(r300->shader_constants[shader].constants, mapped, buf->size); r300->shader_constants[shader].count = buf->size / (4 * sizeof(float)); pipe_buffer_unmap(pipe->screen, buf); |