diff options
Diffstat (limited to 'src/gl_calls.cpp')
| -rw-r--r-- | src/gl_calls.cpp | 121 |
1 files changed, 113 insertions, 8 deletions
diff --git a/src/gl_calls.cpp b/src/gl_calls.cpp index 1cb408a..5007148 100644 --- a/src/gl_calls.cpp +++ b/src/gl_calls.cpp @@ -1,17 +1,27 @@ #include "gl_calls.h" const char *DefaultVertexShaderSource = "#version 330 core\n" -"layout (location = 0) in vec3 aPos;\n" +"layout (location = 0) in vec3 Point;\n" "layout (location = 1) in vec2 aTexCoord;\n" "out vec2 TexCoord;\n" "uniform int VertexMode;\n" "uniform vec3 CompDimensions;\n" +"uniform vec2 LayerDimensions;\n" +"uniform vec2 Pos;\n" +"uniform vec2 Anchor;\n" +"uniform float Rad;\n" +"uniform float Scale;\n" "void main()\n" "{\n" " if (VertexMode == 0) {\n" -" gl_Position = vec4(aPos, 1.0);\n" +" gl_Position = vec4(Point, 1.0);\n" "} else {\n" -" gl_Position = vec4(vec2(aPos.x / CompDimensions.x, aPos.y / CompDimensions.y) * 2 - 1.0f, 0.0f, 1.0);\n" +" vec2 XRotation = vec2(cos(Rad), sin(Rad));\n" +" vec2 YRotation = vec2(sin(Rad), -cos(Rad));\n" +" vec2 XAxis = (Point.x - (Anchor.x * LayerDimensions.x)) * Scale * XRotation;\n" +" vec2 YAxis = (Point.y - (Anchor.y * LayerDimensions.y)) * -Scale * YRotation;\n" +" vec2 LocalPoint = Pos + vec2(XAxis + YAxis);\n" +" gl_Position = vec4(vec2(LocalPoint.x / CompDimensions.x, LocalPoint.y / CompDimensions.y) * 2 - 1.0f, 0.0f, 1.0);\n" "}\n" " TexCoord = aTexCoord;\n" "}\0"; @@ -83,25 +93,24 @@ static void GL_InitDefaultVerts() { 1, 2, 3 }; - // Indices! glGenVertexArrays(1, &DefaultVerts.VertexArrayObject); - glGenBuffers(1, &DefaultVerts.ElementBufferObject); + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, DefaultVerts.ElementBufferObject); glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(GLIndices), GLIndices, GL_STATIC_DRAW); glGenBuffers(1, &DefaultVerts.VertexBufferObject); - // Our vertices need to be stored in this buffer. glBindBuffer(GL_ARRAY_BUFFER, DefaultVerts.VertexBufferObject); glBufferData(GL_ARRAY_BUFFER, sizeof(GL_DefaultVertices), GL_DefaultVertices, GL_STATIC_DRAW); - // position attribute glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void*)0); glEnableVertexAttribArray(0); - // texture coordinate (note the last parameter's offset) glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void*)(3 * sizeof(float))); glEnableVertexAttribArray(1); + + glGenVertexArrays(1, &ShapeVerts.VertexArrayObject); + glGenBuffers(1, &ShapeVerts.VertexBufferObject); } void @@ -156,6 +165,102 @@ GL_DeleteHWBuffer(gl_effect_layer *Test) } void +GL_RasterizeShape(gl_effect_layer *TestL, gl_effect_layer *TestM, void *PointData, uint32 GL_PointCount, + layer_transforms T, int Width, int Height, int BytesPerPixel, void *EffectBitmapAddress, int L_Width, int L_Height) +{ + glBindTexture(GL_TEXTURE_2D, TestL->Texture); + int ByteFlag = (BytesPerPixel == 4) ? GL_RGBA : GL_RGBA16; + int ByteFlag2 = (BytesPerPixel == 4) ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT; + glTexImage2D(GL_TEXTURE_2D, 0, ByteFlag, Width, Height, 0, GL_RGBA, + ByteFlag2, EffectBitmapAddress); + + GL_UpdateTexture(TestL, EffectBitmapAddress, Width, Height, BytesPerPixel, 0); + GL_UpdateTexture(TestM, EffectBitmapAddress, Width, Height, BytesPerPixel, 1); + + glBindFramebuffer(GL_FRAMEBUFFER, TestM->FramebufferObject); + + // stencil buffer + glEnable(GL_STENCIL_TEST); + glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP); + glClearColor(0.0f, 0.0f, 0.0f, 0.0f); + glClear(GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT); + glStencilFunc(GL_ALWAYS, 0, 0xFF); + glStencilMask(0xff); + glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); + + glUseProgram(DefaultShaderProgram); + + int Uniform = glGetUniformLocation(DefaultShaderProgram, "VertexMode"); + glUniform1i(Uniform, 1); + Uniform = glGetUniformLocation(DefaultShaderProgram, "FragmentMode"); + glUniform1i(Uniform, 1); + Uniform = glGetUniformLocation(DefaultShaderProgram, "CompDimensions"); + glUniform3f(Uniform, Width, Height, 0); + Uniform = glGetUniformLocation(DefaultShaderProgram, "LayerDimensions"); + glUniform2f(Uniform, L_Width, L_Height); + Uniform = glGetUniformLocation(DefaultShaderProgram, "Pos"); + glUniform2f(Uniform, T.x, T.y); + Uniform = glGetUniformLocation(DefaultShaderProgram, "Anchor"); + glUniform2f(Uniform, T.ax, T.ay); + real32 Rad = (T.rotation * (PI / 180)); + Uniform = glGetUniformLocation(DefaultShaderProgram, "Rad"); + glUniform1f(Uniform, Rad); + Uniform = glGetUniformLocation(DefaultShaderProgram, "Scale"); + glUniform1f(Uniform, T.scale); + + glBindBuffer(GL_ARRAY_BUFFER, ShapeVerts.VertexBufferObject); + glBufferData(GL_ARRAY_BUFFER, sizeof(real32) * 4 * GL_PointCount, PointData, GL_STATIC_DRAW); + glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(float), (void*)0); + glEnableVertexAttribArray(0); + glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(float), (void*)(2 * sizeof(float))); + glEnableVertexAttribArray(1); + + // stencil buffer + glStencilOpSeparate(GL_FRONT, GL_KEEP, GL_KEEP, GL_INCR_WRAP); + glStencilOpSeparate(GL_BACK, GL_KEEP, GL_KEEP, GL_DECR_WRAP); + glDisable(GL_CULL_FACE); + + glDrawArrays(GL_TRIANGLE_STRIP, 0, GL_PointCount); + + // stencil buffer + glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); + + // default verts + glBindVertexArray(0); + Uniform = glGetUniformLocation(DefaultShaderProgram, "VertexMode"); + glUniform1i(Uniform, 0); + glBindBuffer(GL_ARRAY_BUFFER, DefaultVerts.VertexBufferObject); + glBufferData(GL_ARRAY_BUFFER, sizeof(GL_DefaultVertices), GL_DefaultVertices, GL_STATIC_DRAW); + glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void*)0); + glEnableVertexAttribArray(0); + glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void*)(3 * sizeof(float))); + glEnableVertexAttribArray(1); + + // stencil buffer + glStencilFunc(GL_NOTEQUAL, 0, 0xFF); + glStencilOp(GL_ZERO, GL_ZERO, GL_ZERO); + + glDrawElements(GL_TRIANGLE_STRIP, 6, GL_UNSIGNED_INT, 0); + + // stencil buffer + glDisable(GL_STENCIL_TEST); + glStencilMask(0xFF); + glStencilFunc(GL_ALWAYS, 0, 0xFF); + + glBindFramebuffer(GL_READ_FRAMEBUFFER, TestM->FramebufferObject); + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, TestL->FramebufferObject); + glBlitFramebuffer(0, 0, Width, Height, 0, 0, Width, Height, + GL_COLOR_BUFFER_BIT, GL_NEAREST); + glBindFramebuffer(GL_FRAMEBUFFER, TestL->FramebufferObject); + + glReadPixels(0, 0, Width, Height, GL_RGBA, GL_UNSIGNED_BYTE, EffectBitmapAddress); + + glBindFramebuffer(GL_FRAMEBUFFER, 0); + // GL_DeleteHWBuffer(TestL); + // GL_DeleteHWBuffer(TestM); +} + +void GL_UpdateTexture(gl_effect_layer *Test, void *Data, uint16 Width, uint16 Height, uint16 BytesPerPixel, bool32 Multisample) { glViewport(0, 0, Width, Height); |