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- all drawing is being routed through the interface layer, all vertex buffers are gone.

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No big loss here, none of them made much sense performance wise.
This commit is contained in:
Christoph Oelckers 2019-09-16 21:08:42 +02:00
parent 318009fd69
commit 6536d910b3
10 changed files with 112 additions and 678 deletions
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39
source/build/src/glsurface.cpp
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@ -10,6 +10,7 @@
#include "baselayer.h"
#include "build.h"
#include "../../glbackend/glbackend.h"
static void* buffer;
static GLuint bufferTexID;
@ -17,8 +18,6 @@ static vec2_t bufferRes;
static GLuint paletteTexID;
static GLuint quadVertsID = 0;
static GLuint shaderProgramID = 0;
static GLint texSamplerLoc = -1;
static GLint paletteSamplerLoc = -1;
@ -65,25 +64,6 @@ bool glsurface_initialize(vec2_t bufferResolution)
bufferRes = bufferResolution;
buffer = Xaligned_alloc(16, bufferRes.x * bufferRes.y);
glGenBuffers(1, &quadVertsID);
glBindBuffer(GL_ARRAY_BUFFER, quadVertsID);
const float quadVerts[] =
{
-1.0f, 1.0f, 0.0f, 0.0f, 0.0f, //top-left
-1.0f, -1.0f, 0.0f, 0.0f, 1.0f, //bottom-left
1.0f, 1.0f, 0.0f, 1.0f, 0.0f, //top-right
1.0f, -1.0f, 0.0f, 1.0f, 1.0f //bottom-right
};
glBufferData(GL_ARRAY_BUFFER, sizeof(quadVerts), quadVerts, GL_STATIC_DRAW);
//specify format/arrangement for vertex positions:
glVertexAttribPointer(0, 3, GL_FLOAT, false, sizeof(float) * 5, 0);
//specify format/arrangement for vertex texture coords:
glVertexAttribPointer(1, 2, GL_FLOAT, false, sizeof(float) * 5, (const void*) (sizeof(float) * 3));
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
glActiveTexture(GL_TEXTURE0);
glGenTextures(1, &bufferTexID);
glBindTexture(GL_TEXTURE_2D, bufferTexID);
@ -167,12 +147,6 @@ void glsurface_destroy()
ALIGNED_FREE_AND_NULL(buffer);
glDeleteBuffers(1, &quadVertsID);
quadVertsID = 0;
glDisableVertexAttribArray(0);
glDisableVertexAttribArray(1);
glDeleteTextures(1, &bufferTexID);
bufferTexID = 0;
glDeleteTextures(1, &paletteTexID);
@ -229,7 +203,12 @@ void glsurface_blitBuffer()
glActiveTexture(GL_TEXTURE0);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, bufferRes.x, bufferRes.y, GL_RED, GL_UNSIGNED_BYTE, (void*) buffer);
glDrawArrays(GL_TRIANGLE_STRIP,
0,
4);
auto data = GLInterface.AllocVertices(4);
auto vt = data.second;
vt[0].Set(-1.0f, 1.0f, 0.0f, 0.0f, 0.0f); //top-left
vt[1].Set(-1.0f, -1.0f, 0.0f, 0.0f, 1.0f); //bottom-left
vt[2].Set(1.0f, 1.0f, 0.0f, 1.0f, 0.0f); //top-right
vt[3].Set(1.0f, -1.0f, 0.0f, 1.0f, 1.0f); //bottom-right
GLInterface.Draw(DT_TRIANGLE_STRIP, data.first, 4);
}