From 0705fa35cdaf15ec969c28dc85e88b8be1149a3b Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Tue, 21 Jan 2014 15:26:29 +1000 Subject: [PATCH] st/mesa: add support for GL_ARB_viewport_array (v0.2) this just ties the mesa code to the pre-existing gallium interface, I'm not sure what to do with the CSO stuff yet. 0.2: fix min/max bounds Acked-by: Ilia Mirkin Signed-off-by: Dave Airlie --- src/mesa/state_tracker/st_atom_scissor.c | 77 ++++++++++++++++--------------- src/mesa/state_tracker/st_atom_viewport.c | 37 ++++++++------- src/mesa/state_tracker/st_context.h | 4 +- src/mesa/state_tracker/st_draw_feedback.c | 2 +- src/mesa/state_tracker/st_extensions.c | 9 ++++ 5 files changed, 73 insertions(+), 56 deletions(-) diff --git a/src/mesa/state_tracker/st_atom_scissor.c b/src/mesa/state_tracker/st_atom_scissor.c index a1f72da..a19ade1 100644 --- a/src/mesa/state_tracker/st_atom_scissor.c +++ b/src/mesa/state_tracker/st_atom_scissor.c @@ -43,51 +43,56 @@ static void update_scissor( struct st_context *st ) { - struct pipe_scissor_state scissor; + struct pipe_scissor_state scissor[PIPE_MAX_VIEWPORTS]; const struct gl_context *ctx = st->ctx; const struct gl_framebuffer *fb = ctx->DrawBuffer; GLint miny, maxy; + int i; + bool changed = false; + for (i = 0 ; i < ctx->Const.MaxViewports; i++) { + scissor[i].minx = 0; + scissor[i].miny = 0; + scissor[i].maxx = fb->Width; + scissor[i].maxy = fb->Height; - scissor.minx = 0; - scissor.miny = 0; - scissor.maxx = fb->Width; - scissor.maxy = fb->Height; + if (ctx->Scissor.EnableFlags & (1 << i)) { + /* need to be careful here with xmax or ymax < 0 */ + GLint xmax = MAX2(0, ctx->Scissor.ScissorArray[i].X + ctx->Scissor.ScissorArray[i].Width); + GLint ymax = MAX2(0, ctx->Scissor.ScissorArray[i].Y + ctx->Scissor.ScissorArray[i].Height); - if (ctx->Scissor.EnableFlags & 1) { - /* need to be careful here with xmax or ymax < 0 */ - GLint xmax = MAX2(0, ctx->Scissor.ScissorArray[0].X + ctx->Scissor.ScissorArray[0].Width); - GLint ymax = MAX2(0, ctx->Scissor.ScissorArray[0].Y + ctx->Scissor.ScissorArray[0].Height); + if (ctx->Scissor.ScissorArray[i].X > (GLint)scissor[i].minx) + scissor[i].minx = ctx->Scissor.ScissorArray[i].X; + if (ctx->Scissor.ScissorArray[i].Y > (GLint)scissor[i].miny) + scissor[i].miny = ctx->Scissor.ScissorArray[i].Y; - if (ctx->Scissor.ScissorArray[0].X > (GLint)scissor.minx) - scissor.minx = ctx->Scissor.ScissorArray[0].X; - if (ctx->Scissor.ScissorArray[0].Y > (GLint)scissor.miny) - scissor.miny = ctx->Scissor.ScissorArray[0].Y; + if (xmax < (GLint) scissor[i].maxx) + scissor[i].maxx = xmax; + if (ymax < (GLint) scissor[i].maxy) + scissor[i].maxy = ymax; + + /* check for null space */ + if (scissor[i].minx >= scissor[i].maxx || scissor[i].miny >= scissor[i].maxy) + scissor[i].minx = scissor[i].miny = scissor[i].maxx = scissor[i].maxy = 0; + } - if (xmax < (GLint) scissor.maxx) - scissor.maxx = xmax; - if (ymax < (GLint) scissor.maxy) - scissor.maxy = ymax; + /* Now invert Y if needed. + * Gallium drivers use the convention Y=0=top for surfaces. + */ + if (st_fb_orientation(fb) == Y_0_TOP) { + miny = fb->Height - scissor[i].maxy; + maxy = fb->Height - scissor[i].miny; + scissor[i].miny = miny; + scissor[i].maxy = maxy; + } - /* check for null space */ - if (scissor.minx >= scissor.maxx || scissor.miny >= scissor.maxy) - scissor.minx = scissor.miny = scissor.maxx = scissor.maxy = 0; - } - - /* Now invert Y if needed. - * Gallium drivers use the convention Y=0=top for surfaces. - */ - if (st_fb_orientation(fb) == Y_0_TOP) { - miny = fb->Height - scissor.maxy; - maxy = fb->Height - scissor.miny; - scissor.miny = miny; - scissor.maxy = maxy; - } - - if (memcmp(&scissor, &st->state.scissor, sizeof(scissor)) != 0) { - /* state has changed */ - st->state.scissor = scissor; /* struct copy */ - st->pipe->set_scissor_states(st->pipe, 0, 1, &scissor); /* activate */ + if (memcmp(&scissor[i], &st->state.scissor[i], sizeof(scissor)) != 0) { + /* state has changed */ + st->state.scissor[i] = scissor[i]; /* struct copy */ + changed = true; + } } + if (changed) + st->pipe->set_scissor_states(st->pipe, 0, ctx->Const.MaxViewports, scissor); /* activate */ } diff --git a/src/mesa/state_tracker/st_atom_viewport.c b/src/mesa/state_tracker/st_atom_viewport.c index 8c6d679..7584f9b 100644 --- a/src/mesa/state_tracker/st_atom_viewport.c +++ b/src/mesa/state_tracker/st_atom_viewport.c @@ -43,7 +43,7 @@ update_viewport( struct st_context *st ) { struct gl_context *ctx = st->ctx; GLfloat yScale, yBias; - + int i; /* _NEW_BUFFERS */ if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) { @@ -61,26 +61,29 @@ update_viewport( struct st_context *st ) /* _NEW_VIEWPORT */ + for (i = 0; i < ctx->Const.MaxViewports; i++) { - GLfloat x = ctx->ViewportArray[0].X; - GLfloat y = ctx->ViewportArray[0].Y; - GLfloat z = ctx->ViewportArray[0].Near; - GLfloat half_width = ctx->ViewportArray[0].Width * 0.5f; - GLfloat half_height = ctx->ViewportArray[0].Height * 0.5f; - GLfloat half_depth = (GLfloat)(ctx->ViewportArray[0].Far - ctx->ViewportArray[0].Near) * 0.5f; + GLfloat x = ctx->ViewportArray[i].X; + GLfloat y = ctx->ViewportArray[i].Y; + GLfloat z = ctx->ViewportArray[i].Near; + GLfloat half_width = ctx->ViewportArray[i].Width * 0.5f; + GLfloat half_height = ctx->ViewportArray[i].Height * 0.5f; + GLfloat half_depth = (GLfloat)(ctx->ViewportArray[i].Far - ctx->ViewportArray[i].Near) * 0.5f; - st->state.viewport.scale[0] = half_width; - st->state.viewport.scale[1] = half_height * yScale; - st->state.viewport.scale[2] = half_depth; - st->state.viewport.scale[3] = 1.0; - - st->state.viewport.translate[0] = half_width + x; - st->state.viewport.translate[1] = (half_height + y) * yScale + yBias; - st->state.viewport.translate[2] = half_depth + z; - st->state.viewport.translate[3] = 0.0; + st->state.viewport[i].scale[0] = half_width; + st->state.viewport[i].scale[1] = half_height * yScale; + st->state.viewport[i].scale[2] = half_depth; + st->state.viewport[i].scale[3] = 1.0; - cso_set_viewport(st->cso_context, &st->state.viewport); + st->state.viewport[i].translate[0] = half_width + x; + st->state.viewport[i].translate[1] = (half_height + y) * yScale + yBias; + st->state.viewport[i].translate[2] = half_depth + z; + st->state.viewport[i].translate[3] = 0.0; } + + cso_set_viewport(st->cso_context, &st->state.viewport[0]); + if (ctx->Const.MaxViewports > 1) + st->pipe->set_viewport_states(st->pipe, 1, ctx->Const.MaxViewports - 1, &st->state.viewport[1]); } diff --git a/src/mesa/state_tracker/st_context.h b/src/mesa/state_tracker/st_context.h index 996e0c6..9c699a0 100644 --- a/src/mesa/state_tracker/st_context.h +++ b/src/mesa/state_tracker/st_context.h @@ -115,8 +115,8 @@ struct st_context unsigned size; } constants[PIPE_SHADER_TYPES]; struct pipe_framebuffer_state framebuffer; - struct pipe_scissor_state scissor; - struct pipe_viewport_state viewport; + struct pipe_scissor_state scissor[PIPE_MAX_VIEWPORTS]; + struct pipe_viewport_state viewport[PIPE_MAX_VIEWPORTS]; unsigned sample_mask; GLuint poly_stipple[32]; /**< In OpenGL's bottom-to-top order */ diff --git a/src/mesa/state_tracker/st_draw_feedback.c b/src/mesa/state_tracker/st_draw_feedback.c index 09cd951..177f6b5 100644 --- a/src/mesa/state_tracker/st_draw_feedback.c +++ b/src/mesa/state_tracker/st_draw_feedback.c @@ -156,7 +156,7 @@ st_feedback_draw_vbo(struct gl_context *ctx, * code sends state updates to the pipe, not to our private draw module. */ assert(draw); - draw_set_viewport_states(draw, 0, 1, &st->state.viewport); + draw_set_viewport_states(draw, 0, 1, &st->state.viewport[0]); draw_set_clip_state(draw, &st->state.clip); draw_set_rasterizer_state(draw, &st->state.rasterizer, NULL); draw_bind_vertex_shader(draw, st->vp_variant->draw_shader); diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c index f9b7a44..1f391c9 100644 --- a/src/mesa/state_tracker/st_extensions.c +++ b/src/mesa/state_tracker/st_extensions.c @@ -779,4 +779,13 @@ void st_init_extensions(struct st_context *st) if (!ctx->Extensions.EXT_transform_feedback) ctx->Const.DisableVaryingPacking = GL_TRUE; } + + if (ctx->API == API_OPENGL_CORE) { + ctx->Const.MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS); + if (ctx->Const.MaxViewports >= 16) { + ctx->Const.ViewportBounds.Min = -(float)ctx->Const.MaxViewportWidth; + ctx->Const.ViewportBounds.Max = ctx->Const.MaxViewportWidth; + ctx->Extensions.ARB_viewport_array = GL_TRUE; + } + } } -- 2.7.4