diff options
Diffstat (limited to 'src/mesa/pipe/i915simple/i915_state.c')
| -rw-r--r-- | src/mesa/pipe/i915simple/i915_state.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/mesa/pipe/i915simple/i915_state.c b/src/mesa/pipe/i915simple/i915_state.c index e8ffd1fd7b..8f8b13253d 100644 --- a/src/mesa/pipe/i915simple/i915_state.c +++ b/src/mesa/pipe/i915simple/i915_state.c @@ -30,6 +30,7 @@ #include "pipe/draw/draw_context.h" +#include "pipe/p_winsys.h" #include "i915_context.h" #include "i915_state.h" @@ -131,6 +132,44 @@ static void i915_set_vs_state( struct pipe_context *pipe, } +static void i915_set_constant_buffer(struct pipe_context *pipe, + uint shader, uint index, + const struct pipe_constant_buffer *buf) +{ + struct i915_context *i915 = i915_context(pipe); + struct pipe_winsys *ws = pipe->winsys; + + assert(shader < PIPE_SHADER_TYPES); + assert(index == 0); + + /* Make a copy of shader constants. + * During fragment program translation we may add additional + * constants to the array. + * + * We want to consider the situation where some user constants + * (ex: a material color) may change frequently but the shader program + * stays the same. In that case we should only be updating the first + * N constants, leaving any extras from shader translation alone. + */ + { + void *mapped; + if (buf->size && + (mapped = ws->buffer_map(ws, buf->buffer, PIPE_BUFFER_FLAG_READ))) { + memcpy(i915->current.constants[shader], mapped, buf->size); + fprintf(stderr, "i915 problem: map of constant buffer failed\n"); + ws->buffer_unmap(ws, buf->buffer); + i915->current.num_user_constants[shader] + = buf->size / (4 * sizeof(float)); + } + else { + i915->current.num_user_constants[shader] = 0; + } + } + + i915->dirty |= I915_NEW_CONSTANTS; +} + + static void i915_set_sampler_state(struct pipe_context *pipe, unsigned unit, const struct pipe_sampler_state *sampler) @@ -256,6 +295,7 @@ i915_init_state_functions( struct i915_context *i915 ) i915->pipe.set_blend_state = i915_set_blend_state; i915->pipe.set_clip_state = i915_set_clip_state; i915->pipe.set_clear_color_state = i915_set_clear_color_state; + i915->pipe.set_constant_buffer = i915_set_constant_buffer; i915->pipe.set_depth_state = i915_set_depth_test_state; i915->pipe.set_framebuffer_state = i915_set_framebuffer_state; i915->pipe.set_fs_state = i915_set_fs_state; |