[Bf-blender-cvs] [e5799d1389] blender2.8: OpenGL immediate mode: gpu_framebuffer.c
Clément Foucault
noreply at git.blender.org
Fri Feb 24 01:29:01 CET 2017
Commit: e5799d13897e43410758af4fcef9e1e71a25e719
Author: Clément Foucault
Date: Wed Feb 22 19:57:58 2017 +0100
Branches: blender2.8
https://developer.blender.org/rBe5799d13897e43410758af4fcef9e1e71a25e719
OpenGL immediate mode: gpu_framebuffer.c
I had to make some changes to the sep_gaussian_blur shader to be compliant for gl 3.3 leap
===================================================================
M source/blender/gpu/gawain/batch.c
M source/blender/gpu/gawain/batch.h
M source/blender/gpu/intern/gpu_framebuffer.c
M source/blender/gpu/shaders/gpu_shader_sep_gaussian_blur_frag.glsl
M source/blender/gpu/shaders/gpu_shader_sep_gaussian_blur_vert.glsl
===================================================================
diff --git a/source/blender/gpu/gawain/batch.c b/source/blender/gpu/gawain/batch.c
index 81e694cc9b..a40e801d48 100644
--- a/source/blender/gpu/gawain/batch.c
+++ b/source/blender/gpu/gawain/batch.c
@@ -133,6 +133,17 @@ void Batch_done_using_program(Batch* batch)
}
}
+void Batch_Uniform1i(Batch* batch, const char* name, int value)
+ {
+ int loc = glGetUniformLocation(batch->program, name);
+
+#if TRUST_NO_ONE
+ assert(loc != -1);
+#endif
+
+ glUniform1i(loc, value);
+ }
+
void Batch_Uniform1b(Batch* batch, const char* name, bool value)
{
int loc = glGetUniformLocation(batch->program, name);
diff --git a/source/blender/gpu/gawain/batch.h b/source/blender/gpu/gawain/batch.h
index 660ed9eb76..c12cc4e66a 100644
--- a/source/blender/gpu/gawain/batch.h
+++ b/source/blender/gpu/gawain/batch.h
@@ -50,6 +50,7 @@ void Batch_set_program(Batch*, GLuint program);
void Batch_use_program(Batch*); // call before Batch_Uniform (temp hack?)
void Batch_done_using_program(Batch*);
+void Batch_Uniform1i(Batch*, const char* name, int value);
void Batch_Uniform1b(Batch*, const char* name, bool value);
void Batch_Uniform1f(Batch*, const char* name, float value);
void Batch_Uniform2f(Batch*, const char* name, float x, float y);
diff --git a/source/blender/gpu/intern/gpu_framebuffer.c b/source/blender/gpu/intern/gpu_framebuffer.c
index 3b44abb479..eb52825e02 100644
--- a/source/blender/gpu/intern/gpu_framebuffer.c
+++ b/source/blender/gpu/intern/gpu_framebuffer.c
@@ -32,9 +32,11 @@
#include "BKE_global.h"
+#include "GPU_batch.h"
#include "GPU_debug.h"
#include "GPU_glew.h"
#include "GPU_framebuffer.h"
+#include "GPU_matrix.h"
#include "GPU_shader.h"
#include "GPU_texture.h"
@@ -379,20 +381,48 @@ void GPU_framebuffer_blur(
GPUFrameBuffer *fb, GPUTexture *tex,
GPUFrameBuffer *blurfb, GPUTexture *blurtex)
{
+ const float fullscreencos[4][2] = {{-1.0f, -1.0f}, {1.0f, -1.0f}, {-1.0f, 1.0f}, {1.0f, 1.0f}};
+ const float fullscreenuvs[4][2] = {{0.0f, 0.0f}, {1.0f, 0.0f}, {0.0f, 1.0f}, {1.0f, 1.0f}};
+
+ static VertexFormat format = {0};
+ static VertexBuffer vbo = {0};
+ static Batch batch = {0};
+
const float scaleh[2] = {1.0f / GPU_texture_width(blurtex), 0.0f};
const float scalev[2] = {0.0f, 1.0f / GPU_texture_height(tex)};
GPUShader *blur_shader = GPU_shader_get_builtin_shader(GPU_SHADER_SEP_GAUSSIAN_BLUR);
- int scale_uniform, texture_source_uniform;
if (!blur_shader)
return;
- scale_uniform = GPU_shader_get_uniform(blur_shader, "ScaleU");
- texture_source_uniform = GPU_shader_get_uniform(blur_shader, "textureSource");
+ /* Preparing to draw quad */
+ if (format.attrib_ct == 0) {
+ unsigned int i = 0;
+ /* Vertex format */
+ unsigned int pos = add_attrib(&format, "pos", GL_FLOAT, 2, KEEP_FLOAT);
+ unsigned int uvs = add_attrib(&format, "uvs", GL_FLOAT, 2, KEEP_FLOAT);
+
+ /* Vertices */
+ VertexBuffer_init_with_format(&vbo, &format);
+ VertexBuffer_allocate_data(&vbo, 36);
+
+ for (int j = 0; j < 3; ++j) {
+ setAttrib(&vbo, uvs, i, fullscreenuvs[j]); setAttrib(&vbo, pos, i++, fullscreencos[j]);
+ }
+ for (int j = 1; j < 4; ++j) {
+ setAttrib(&vbo, uvs, i, fullscreenuvs[j]); setAttrib(&vbo, pos, i++, fullscreencos[j]);
+ }
+
+ Batch_init(&batch, GL_TRIANGLES, &vbo, NULL);
+ }
- /* Blurring horizontally */
+ glDisable(GL_DEPTH_TEST);
+
+ /* Load fresh matrices */
+ gpuMatrixBegin3D(); /* TODO: finish 2D API */
+ /* Blurring horizontally */
/* We do the bind ourselves rather than using GPU_framebuffer_texture_bind() to avoid
* pushing unnecessary matrices onto the OpenGL stack. */
glBindFramebuffer(GL_FRAMEBUFFER, blurfb->object);
@@ -401,51 +431,32 @@ void GPU_framebuffer_blur(
/* avoid warnings from texture binding */
GG.currentfb = blurfb->object;
- GPU_shader_bind(blur_shader);
- GPU_shader_uniform_vector(blur_shader, scale_uniform, 2, 1, scaleh);
- GPU_shader_uniform_texture(blur_shader, texture_source_uniform, tex);
glViewport(0, 0, GPU_texture_width(blurtex), GPU_texture_height(blurtex));
- /* Preparing to draw quad */
- glMatrixMode(GL_TEXTURE);
- glLoadIdentity();
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
-
- glDisable(GL_DEPTH_TEST);
-
GPU_texture_bind(tex, 0);
- /* Drawing quad */
- glBegin(GL_QUADS);
- glTexCoord2d(0, 0); glVertex2f(1, 1);
- glTexCoord2d(1, 0); glVertex2f(-1, 1);
- glTexCoord2d(1, 1); glVertex2f(-1, -1);
- glTexCoord2d(0, 1); glVertex2f(1, -1);
- glEnd();
+ Batch_set_builtin_program(&batch, GPU_SHADER_SEP_GAUSSIAN_BLUR);
+ Batch_Uniform2f(&batch, "ScaleU", scaleh[0], scaleh[1]);
+ Batch_Uniform1i(&batch, "textureSource", GL_TEXTURE0);
+ Batch_draw(&batch);
/* Blurring vertically */
-
glBindFramebuffer(GL_FRAMEBUFFER, fb->object);
glDrawBuffer(GL_COLOR_ATTACHMENT0);
GG.currentfb = fb->object;
glViewport(0, 0, GPU_texture_width(tex), GPU_texture_height(tex));
- GPU_shader_uniform_vector(blur_shader, scale_uniform, 2, 1, scalev);
- GPU_shader_uniform_texture(blur_shader, texture_source_uniform, blurtex);
+
GPU_texture_bind(blurtex, 0);
- glBegin(GL_QUADS);
- glTexCoord2d(0, 0); glVertex2f(1, 1);
- glTexCoord2d(1, 0); glVertex2f(-1, 1);
- glTexCoord2d(1, 1); glVertex2f(-1, -1);
- glTexCoord2d(0, 1); glVertex2f(1, -1);
- glEnd();
+ /* Hack to make the following uniform stick */
+ Batch_set_builtin_program(&batch, GPU_SHADER_SEP_GAUSSIAN_BLUR);
+ Batch_Uniform2f(&batch, "ScaleU", scalev[0], scalev[1]);
+ Batch_Uniform1i(&batch, "textureSource", GL_TEXTURE0);
+ Batch_draw(&batch);
- GPU_shader_unbind();
+ gpuMatrixEnd();
}
void GPU_framebuffer_blit(GPUFrameBuffer *fb_read, int read_slot, GPUFrameBuffer *fb_write, int write_slot, bool use_depth)
diff --git a/source/blender/gpu/shaders/gpu_shader_sep_gaussian_blur_frag.glsl b/source/blender/gpu/shaders/gpu_shader_sep_gaussian_blur_frag.glsl
index b485d2cce8..d7cdec9441 100644
--- a/source/blender/gpu/shaders/gpu_shader_sep_gaussian_blur_frag.glsl
+++ b/source/blender/gpu/shaders/gpu_shader_sep_gaussian_blur_frag.glsl
@@ -1,16 +1,25 @@
uniform vec2 ScaleU;
uniform sampler2D textureSource;
+#if __VERSION__ == 120
+ varying vec2 texCoord_interp;
+ #define fragColor gl_FragColor
+#else
+ in vec2 texCoord_interp;
+ out vec4 fragColor;
+ #define texture2D texture
+#endif
+
void main()
{
vec4 color = vec4(0.0);
- color += texture2D(textureSource, gl_TexCoord[0].st + vec2(-3.0 * ScaleU.x, -3.0 * ScaleU.y)) * 0.015625;
- color += texture2D(textureSource, gl_TexCoord[0].st + vec2(-2.0 * ScaleU.x, -2.0 * ScaleU.y)) * 0.09375;
- color += texture2D(textureSource, gl_TexCoord[0].st + vec2(-1.0 * ScaleU.x, -1.0 * ScaleU.y)) * 0.234375;
- color += texture2D(textureSource, gl_TexCoord[0].st + vec2(0.0, 0.0)) * 0.3125;
- color += texture2D(textureSource, gl_TexCoord[0].st + vec2(1.0 * ScaleU.x, 1.0 * ScaleU.y)) * 0.234375;
- color += texture2D(textureSource, gl_TexCoord[0].st + vec2(2.0 * ScaleU.x, 2.0 * ScaleU.y)) * 0.09375;
- color += texture2D(textureSource, gl_TexCoord[0].st + vec2(3.0 * ScaleU.x, 3.0 * ScaleU.y)) * 0.015625;
+ color += texture2D(textureSource, texCoord_interp.st + vec2(-3.0 * ScaleU.x, -3.0 * ScaleU.y)) * 0.015625;
+ color += texture2D(textureSource, texCoord_interp.st + vec2(-2.0 * ScaleU.x, -2.0 * ScaleU.y)) * 0.09375;
+ color += texture2D(textureSource, texCoord_interp.st + vec2(-1.0 * ScaleU.x, -1.0 * ScaleU.y)) * 0.234375;
+ color += texture2D(textureSource, texCoord_interp.st + vec2(0.0, 0.0)) * 0.3125;
+ color += texture2D(textureSource, texCoord_interp.st + vec2(1.0 * ScaleU.x, 1.0 * ScaleU.y)) * 0.234375;
+ color += texture2D(textureSource, texCoord_interp.st + vec2(2.0 * ScaleU.x, 2.0 * ScaleU.y)) * 0.09375;
+ color += texture2D(textureSource, texCoord_interp.st + vec2(3.0 * ScaleU.x, 3.0 * ScaleU.y)) * 0.015625;
- gl_FragColor = color;
+ fragColor = color;
}
diff --git a/source/blender/gpu/shaders/gpu_shader_sep_gaussian_blur_vert.glsl b/source/blender/gpu/shaders/gpu_shader_sep_gaussian_blur_vert.glsl
index 5d00108b05..a0e5b022e6 100644
--- a/source/blender/gpu/shaders/gpu_shader_sep_gaussian_blur_vert.glsl
+++ b/source/blender/gpu/shaders/gpu_shader_sep_gaussian_blur_vert.glsl
@@ -1,6 +1,18 @@
+uniform mat4 ModelViewProjectionMatrix;
+
+#if __VERSION__ == 120
+ attribute vec2 pos;
+ attribute vec2 uvs;
+ varying vec2 texCoord_interp;
+#else
+ in vec2 pos;
+ in vec2 uvs;
+ out vec2 texCoord_interp;
+#endif
+
void main()
{
- gl_Position = ftransform();
- gl_TexCoord[0] = gl_MultiTexCoord0;
+ gl_Position = ModelViewProjectionMatrix * vec4(pos, 0.0, 1.0);
+ texCoord_interp = uvs;
}
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